Final answer:
ICD-10's Chapter 9 contains codes for circulatory system conditions, including cardiovascular diseases and hypertension.
Step-by-step explanation:
The chapter of ICD-10 that contains codes for conditions such as hypertension and diseases of the circulatory system is Chapter 9. This section of the ICD-10 is designated for the classification of diseases and health conditions related to the circulatory system, including cardiovascular diseases and hypertension.
The correct answer to the student's question is D) Chapter 9. This chapter provides a detailed description of the heart, blood vessels, and blood, and explains how they function together to transport substances throughout the body and maintain homeostasis. It also describes several diseases of the cardiovascular system and lifestyle choices that can help prevent most of them.